The term 'STREAM SWIRL' is a combination of two words, 'STREAM' and 'SWIRL'. STREAM refers to a body of flowing water, while SWIRL is a circular motion. The crossword solution for this term is EDDY, which is a small whirlpool or current of water in a STREAM or river. Eddies are formed when the flow of water is disrupted by an obstacle, such as a rock or a bend in the river. They can also be caused by changes in the speed or direction of the water. Eddies can be beneficial to aquatic life, providing shelter and food for fish and other organisms.